aboutsummaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/char/ipmi/ipmi_msghandler.c29
-rw-r--r--drivers/char/ipmi/ipmi_poweroff.c112
2 files changed, 130 insertions, 11 deletions
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index ed75e96d003..1813d0d198f 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -54,7 +54,9 @@ static int ipmi_init_msghandler(void);
static int initialized = 0;
-static struct proc_dir_entry *proc_ipmi_root = NULL;
+#ifdef CONFIG_PROC_FS
+struct proc_dir_entry *proc_ipmi_root = NULL;
+#endif /* CONFIG_PROC_FS */
#define MAX_EVENTS_IN_QUEUE 25
@@ -124,11 +126,13 @@ struct ipmi_channel
unsigned char protocol;
};
+#ifdef CONFIG_PROC_FS
struct ipmi_proc_entry
{
char *name;
struct ipmi_proc_entry *next;
};
+#endif
#define IPMI_IPMB_NUM_SEQ 64
#define IPMI_MAX_CHANNELS 8
@@ -156,10 +160,13 @@ struct ipmi_smi
struct ipmi_smi_handlers *handlers;
void *send_info;
+#ifdef CONFIG_PROC_FS
/* A list of proc entries for this interface. This does not
need a lock, only one thread creates it and only one thread
destroys it. */
+ spinlock_t proc_entry_lock;
struct ipmi_proc_entry *proc_entries;
+#endif
/* A table of sequence numbers for this interface. We use the
sequence numbers for IPMB messages that go out of the
@@ -1470,8 +1477,9 @@ int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name,
read_proc_t *read_proc, write_proc_t *write_proc,
void *data, struct module *owner)
{
- struct proc_dir_entry *file;
int rv = 0;
+#ifdef CONFIG_PROC_FS
+ struct proc_dir_entry *file;
struct ipmi_proc_entry *entry;
/* Create a list element. */
@@ -1497,10 +1505,13 @@ int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name,
file->write_proc = write_proc;
file->owner = owner;
+ spin_lock(&smi->proc_entry_lock);
/* Stick it on the list. */
entry->next = smi->proc_entries;
smi->proc_entries = entry;
+ spin_unlock(&smi->proc_entry_lock);
}
+#endif /* CONFIG_PROC_FS */
return rv;
}
@@ -1509,6 +1520,7 @@ static int add_proc_entries(ipmi_smi_t smi, int num)
{
int rv = 0;
+#ifdef CONFIG_PROC_FS
sprintf(smi->proc_dir_name, "%d", num);
smi->proc_dir = proc_mkdir(smi->proc_dir_name, proc_ipmi_root);
if (!smi->proc_dir)
@@ -1531,14 +1543,17 @@ static int add_proc_entries(ipmi_smi_t smi, int num)
rv = ipmi_smi_add_proc_entry(smi, "version",
version_file_read_proc, NULL,
smi, THIS_MODULE);
+#endif /* CONFIG_PROC_FS */
return rv;
}
static void remove_proc_entries(ipmi_smi_t smi)
{
+#ifdef CONFIG_PROC_FS
struct ipmi_proc_entry *entry;
+ spin_lock(&smi->proc_entry_lock);
while (smi->proc_entries) {
entry = smi->proc_entries;
smi->proc_entries = entry->next;
@@ -1547,7 +1562,9 @@ static void remove_proc_entries(ipmi_smi_t smi)
kfree(entry->name);
kfree(entry);
}
+ spin_unlock(&smi->proc_entry_lock);
remove_proc_entry(smi->proc_dir_name, proc_ipmi_root);
+#endif /* CONFIG_PROC_FS */
}
static int
@@ -1694,6 +1711,9 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers,
new_intf->seq_table[j].seqid = 0;
}
new_intf->curr_seq = 0;
+#ifdef CONFIG_PROC_FS
+ spin_lock_init(&(new_intf->proc_entry_lock));
+#endif
spin_lock_init(&(new_intf->waiting_msgs_lock));
INIT_LIST_HEAD(&(new_intf->waiting_msgs));
spin_lock_init(&(new_intf->events_lock));
@@ -3085,6 +3105,7 @@ static int ipmi_init_msghandler(void)
ipmi_interfaces[i] = NULL;
}
+#ifdef CONFIG_PROC_FS
proc_ipmi_root = proc_mkdir("ipmi", NULL);
if (!proc_ipmi_root) {
printk(KERN_ERR PFX "Unable to create IPMI proc dir");
@@ -3092,6 +3113,7 @@ static int ipmi_init_msghandler(void)
}
proc_ipmi_root->owner = THIS_MODULE;
+#endif /* CONFIG_PROC_FS */
init_timer(&ipmi_timer);
ipmi_timer.data = 0;
@@ -3129,7 +3151,9 @@ static __exit void cleanup_ipmi(void)
atomic_inc(&stop_operation);
del_timer_sync(&ipmi_timer);
+#ifdef CONFIG_PROC_FS
remove_proc_entry(proc_ipmi_root->name, &proc_root);
+#endif /* CONFIG_PROC_FS */
initialized = 0;
@@ -3170,4 +3194,5 @@ EXPORT_SYMBOL(ipmi_get_my_address);
EXPORT_SYMBOL(ipmi_set_my_LUN);
EXPORT_SYMBOL(ipmi_get_my_LUN);
EXPORT_SYMBOL(ipmi_smi_add_proc_entry);
+EXPORT_SYMBOL(proc_ipmi_root);
EXPORT_SYMBOL(ipmi_user_set_run_to_completion);
diff --git a/drivers/char/ipmi/ipmi_poweroff.c b/drivers/char/ipmi/ipmi_poweroff.c
index cb5cdc6f14b..61329b55c4a 100644
--- a/drivers/char/ipmi/ipmi_poweroff.c
+++ b/drivers/char/ipmi/ipmi_poweroff.c
@@ -34,6 +34,8 @@
#include <asm/semaphore.h>
#include <linux/kdev_t.h>
#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/proc_fs.h>
#include <linux/string.h>
#include <linux/ipmi.h>
#include <linux/ipmi_smi.h>
@@ -44,6 +46,18 @@
/* Where to we insert our poweroff function? */
extern void (*pm_power_off)(void);
+/* Definitions for controlling power off (if the system supports it). It
+ * conveniently matches the IPMI chassis control values. */
+#define IPMI_CHASSIS_POWER_DOWN 0 /* power down, the default. */
+#define IPMI_CHASSIS_POWER_CYCLE 0x02 /* power cycle */
+
+/* the IPMI data command */
+static int poweroff_control = IPMI_CHASSIS_POWER_DOWN;
+
+/* parameter definition to allow user to flag power cycle */
+module_param(poweroff_control, int, IPMI_CHASSIS_POWER_DOWN);
+MODULE_PARM_DESC(poweroff_control, " Set to 2 to enable power cycle instead of power down. Power cycle is contingent on hardware support, otherwise it defaults back to power down.");
+
/* Stuff from the get device id command. */
static unsigned int mfg_id;
static unsigned int prod_id;
@@ -349,26 +363,38 @@ static void ipmi_poweroff_chassis (ipmi_user_t user)
smi_addr.channel = IPMI_BMC_CHANNEL;
smi_addr.lun = 0;
- printk(KERN_INFO PFX "Powering down via IPMI chassis control command\n");
+ powercyclefailed:
+ printk(KERN_INFO PFX "Powering %s via IPMI chassis control command\n",
+ ((poweroff_control != IPMI_CHASSIS_POWER_CYCLE) ? "down" : "cycle"));
/*
* Power down
*/
send_msg.netfn = IPMI_NETFN_CHASSIS_REQUEST;
send_msg.cmd = IPMI_CHASSIS_CONTROL_CMD;
- data[0] = 0; /* Power down */
+ data[0] = poweroff_control;
send_msg.data = data;
send_msg.data_len = sizeof(data);
rv = ipmi_request_in_rc_mode(user,
(struct ipmi_addr *) &smi_addr,
&send_msg);
if (rv) {
- printk(KERN_ERR PFX "Unable to send chassis powerdown message,"
- " IPMI error 0x%x\n", rv);
- goto out;
+ switch (poweroff_control) {
+ case IPMI_CHASSIS_POWER_CYCLE:
+ /* power cycle failed, default to power down */
+ printk(KERN_ERR PFX "Unable to send chassis power " \
+ "cycle message, IPMI error 0x%x\n", rv);
+ poweroff_control = IPMI_CHASSIS_POWER_DOWN;
+ goto powercyclefailed;
+
+ case IPMI_CHASSIS_POWER_DOWN:
+ default:
+ printk(KERN_ERR PFX "Unable to send chassis power " \
+ "down message, IPMI error 0x%x\n", rv);
+ break;
+ }
}
- out:
return;
}
@@ -430,7 +456,8 @@ static void ipmi_po_new_smi(int if_num)
if (ready)
return;
- rv = ipmi_create_user(if_num, &ipmi_poweroff_handler, NULL, &ipmi_user);
+ rv = ipmi_create_user(if_num, &ipmi_poweroff_handler, NULL,
+ &ipmi_user);
if (rv) {
printk(KERN_ERR PFX "could not create IPMI user, error %d\n",
rv);
@@ -509,21 +536,84 @@ static struct ipmi_smi_watcher smi_watcher =
};
+#ifdef CONFIG_PROC_FS
+/* displays properties to proc */
+static int proc_read_chassctrl(char *page, char **start, off_t off, int count,
+ int *eof, void *data)
+{
+ return sprintf(page, "%d\t[ 0=powerdown 2=powercycle ]\n",
+ poweroff_control);
+}
+
+/* process property writes from proc */
+static int proc_write_chassctrl(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ int rv = count;
+ unsigned int newval = 0;
+
+ sscanf(buffer, "%d", &newval);
+ switch (newval) {
+ case IPMI_CHASSIS_POWER_CYCLE:
+ printk(KERN_INFO PFX "power cycle is now enabled\n");
+ poweroff_control = newval;
+ break;
+
+ case IPMI_CHASSIS_POWER_DOWN:
+ poweroff_control = IPMI_CHASSIS_POWER_DOWN;
+ break;
+
+ default:
+ rv = -EINVAL;
+ break;
+ }
+
+ return rv;
+}
+#endif /* CONFIG_PROC_FS */
+
/*
* Startup and shutdown functions.
*/
static int ipmi_poweroff_init (void)
{
- int rv;
+ int rv;
+ struct proc_dir_entry *file;
printk ("Copyright (C) 2004 MontaVista Software -"
" IPMI Powerdown via sys_reboot version "
IPMI_POWEROFF_VERSION ".\n");
+ switch (poweroff_control) {
+ case IPMI_CHASSIS_POWER_CYCLE:
+ printk(KERN_INFO PFX "Power cycle is enabled.\n");
+ break;
+
+ case IPMI_CHASSIS_POWER_DOWN:
+ default:
+ poweroff_control = IPMI_CHASSIS_POWER_DOWN;
+ break;
+ }
+
rv = ipmi_smi_watcher_register(&smi_watcher);
- if (rv)
+ if (rv) {
printk(KERN_ERR PFX "Unable to register SMI watcher: %d\n", rv);
+ goto out_err;
+ }
+
+#ifdef CONFIG_PROC_FS
+ file = create_proc_entry("poweroff_control", 0, proc_ipmi_root);
+ if (!file) {
+ printk(KERN_ERR PFX "Unable to create proc power control\n");
+ } else {
+ file->nlink = 1;
+ file->read_proc = proc_read_chassctrl;
+ file->write_proc = proc_write_chassctrl;
+ file->owner = THIS_MODULE;
+ }
+#endif
+ out_err:
return rv;
}
@@ -532,6 +622,10 @@ static __exit void ipmi_poweroff_cleanup(void)
{
int rv;
+#ifdef CONFIG_PROC_FS
+ remove_proc_entry("poweroff_control", proc_ipmi_root);
+#endif
+
ipmi_smi_watcher_unregister(&smi_watcher);
if (ready) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 13:20:00 +0000